Yamaha NS-P41 50 W 5.1 Channel Home Theatre is perfect for upgrading your conventional TV sound to rich surround. Its traditional design enhances any room Wall mountable (front, center and surround). This speaker is tuned to deliver a clear, soft sound that is pleasant to listen to for long periods. In addition, the surround speakers and subwoofer are perfectly matched for smooth sound crossover. Advanced YST II combines negative-impedance and constant current principles to drive the speaker cone with tight control.